MBRD340T4 Equivalent & Substitute Parts

Part Overview

The MBRD340T4 is a Schottky rectifier diode manufactured by onsemi, rated for 40 V DC reverse voltage and 3 A average rectified current in a surface mount DPAK package. This part is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and ongoing production requirements. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional alternatives within acceptable parameter tolerances for the intended application.

Key Parameters

Parameter	Value	Unit
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	40	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	600 mV @ 3 A	—
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	200 µA @ 40 V	—
Mounting Type	Surface Mount	—
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63	—
RoHS Status	RoHS non-compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the MBRD340T4 is determined by the following critical parameters:

Electrical Equivalence Criteria:

Voltage - DC Reverse (Vr) (Max): 40 V minimum
Current - Average Rectified (Io): 3 A minimum
Voltage - Forward (Vf) (Max) @ If: 600 mV or lower at 3 A
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
Technology: Schottky

Mechanical Compatibility Criteria:

Mounting Type: Surface Mount
Package / Case: TO-252-3, DPAK (2 Leads + Tab), SC-63

Compliance Criteria:

Moisture Sensitivity Level (MSL): 1 (Unlimited)
REACH Status: REACH Unaffected

Substitute parts are classified into two categories:

Direct Equivalents: Parts maintaining identical electrical ratings (40 V, 3 A, 600 mV forward voltage) and identical DPAK package configuration.

Functional Substitutes: Parts meeting or exceeding the minimum electrical requirements with compatible packaging, though may exhibit variations in secondary parameters such as reverse leakage current or forward voltage within acceptable engineering tolerances.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	Package	Product Status	RoHS Status
MBRD340T4	onsemi	40 V	3 A	600 mV @ 3 A	TO-252-3, DPAK	Obsolete	RoHS non-compliant
MBRD340T4G	onsemi	40 V	3 A	600 mV @ 3 A	TO-252-3, DPAK	Active	ROHS3 Compliant
CSHD3-40 TR13 PBFREE	Central Semiconductor Corp	40 V	3 A	650 mV @ 3 A	TO-252-3, DPAK	Active	ROHS3 Compliant
VS-MBRD340TR-M3	Vishay General Semiconductor - Diodes Division	40 V	3 A	600 mV @ 3 A	TO-252-3, DPAK	Active	ROHS3 Compliant
VS-MBRD340TRL-M3	Vishay General Semiconductor - Diodes Division	40 V	3 A	600 mV @ 3 A	TO-252-3, DPAK	Active	ROHS3 Compliant
BAT165E6327HTSA1	Infineon Technologies	40 V	750 mA	740 mV @ 750 mA	SC-76, SOD-323	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Equivalent (Recommended for Direct Replacement):

MBRD340T4G is the direct active equivalent of the obsolete MBRD340T4. Both parts share identical electrical specifications (40 V, 3 A, 600 mV forward voltage) and DPAK packaging. MBRD340T4G carries ROHS3 compliance status, addressing regulatory requirements for new designs. This part is the preferred selection for applications requiring no design modification.

Secondary Equivalents (Compatible Substitutes):

VS-MBRD340TR-M3 and VS-MBRD340TRL-M3 (Vishay) maintain identical electrical ratings and DPAK packaging. Both are active products with ROHS3 compliance. These parts are suitable for direct substitution in existing designs.

CSHD3-40 TR13 PBFREE (Central Semiconductor Corp) provides functional substitution with 40 V, 3 A ratings in DPAK packaging. Forward voltage is specified at 650 mV @ 3 A, representing a 50 mV increase over the original specification. This part is active and ROHS3 compliant. Selection of this part requires confirmation that the 50 mV forward voltage increase does not impact circuit performance.

Limited Substitution (Current-Derating Application):

BAT165E6327HTSA1 (Infineon) is a 40 V Schottky diode with reduced current rating (750 mA versus 3 A). This part operates in a smaller SOD-323 package and is not a direct substitute for the MBRD340T4. Selection of this part is limited to applications where the 3 A current requirement can be reduced or where multiple devices can be paralleled. This part is active and ROHS3 compliant.

All recommended substitutes maintain MSL 1 (Unlimited) moisture sensitivity classification and REACH Unaffected status consistent with the original part.

Frequently Asked Questions (FAQ)

Q: Can MBRD340T4G be used as a direct replacement for MBRD340T4?

A: Yes. MBRD340T4G is the active equivalent of the obsolete MBRD340T4, with identical electrical specifications (40 V, 3 A, 600 mV forward voltage) and DPAK packaging. No circuit modification is required. MBRD340T4G carries ROHS3 compliance, addressing regulatory requirements for new production.

Q: What is the difference between MBRD340T4G and the Vishay alternatives (VS-MBRD340TR-M3, VS-MBRD340TRL-M3)?

A: All three parts share identical electrical ratings (40 V, 3 A, 600 mV forward voltage) and DPAK packaging. The primary differences are manufacturer and packaging format. MBRD340T4G is supplied in Cut Tape and Digi-Reel format. VS-MBRD340TR-M3 and VS-MBRD340TRL-M3 are supplied in Tape & Reel format. All three are active products with ROHS3 compliance.

Q: Can CSHD3-40 TR13 PBFREE replace MBRD340T4?

A: CSHD3-40 TR13 PBFREE is a functional substitute with identical voltage and current ratings (40 V, 3 A) and DPAK packaging. Forward voltage is specified at 650 mV @ 3 A, compared to 600 mV for the original part. This 50 mV difference must be evaluated against circuit design margins. The part is active and ROHS3 compliant.

Q: Is BAT165E6327HTSA1 a suitable replacement?

A: BAT165E6327HTSA1 is not a direct replacement. While it maintains the 40 V voltage rating, the current rating is reduced to 750 mA (compared to 3 A for MBRD340T4). Additionally, the package is SOD-323, not DPAK. This part is suitable only for applications where the lower current rating is acceptable or where multiple devices can be paralleled. The part is active and ROHS3 compliant.

Q: What packaging formats are available for equivalent parts?

A: MBRD340T4G is available in Cut Tape (CT) and Digi-Reel format. VS-MBRD340TR-M3 and VS-MBRD340TRL-M3 are available in Tape & Reel (TR) format. CSHD3-40 TR13 PBFREE is available in Tape & Reel (TR) format. All maintain the TO-252-3 DPAK (2 Leads + Tab) package configuration. BAT165E6327HTSA1 uses SOD-323 packaging and is not mechanically compatible with DPAK footprints.

Q: Are all substitute parts RoHS compliant?

A: The original MBRD340T4 is RoHS non-compliant. All active equivalent and substitute parts listed (MBRD340T4G, CSHD3-40 TR13 PBFREE, VS-MBRD340TR-M3, VS-MBRD340TRL-M3, and BAT165E6327HTSA1) are ROHS3 compliant, meeting current regulatory requirements for new designs and production.

Q: What is the moisture sensitivity level for these parts?

A: All listed parts maintain MSL 1 (Unlimited) moisture sensitivity classification, indicating no special moisture control requirements during storage, handling, or assembly.

Q: Can multiple BAT165E6327HTSA1 devices be used in parallel to achieve 3 A current capacity?

A: Parallel operation of Schottky diodes requires careful circuit design to ensure current sharing. While theoretically possible, this approach introduces additional complexity and is not recommended as a standard substitution strategy. Direct equivalent parts (MBRD340T4G, VS-MBRD340TR-M3, VS-MBRD340TRL-M3) are preferred for applications requiring 3 A continuous current.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message